Combination heater and muffler construction



Oct. 2v2, 1929. Q. G. NQBLITT r AL colINA'rIoN HEATER AND MUFFLERCONSTRUCTION Filed Dec. 27. 1926 r. ffm .L MK w 0 BER E T a n NNHP W. JvT Na T I n K www U @um V.. B

i Patented a. 22, 1929 .UNITED AsfrATa-s PATENT OFFICE QUINTIN G.NOBLIT'I, ALaw A nEEvEs, ANI) IItANx II. sPAnIIs, OI'l INDIANAPOLIS,

INDIANA, AssIeNoBs To INDIANAPOLIS :PUMP s TUBE OOMPANY,OF INDIAN-APOLIS, INDIANA, A CORPORATION.

COMBINATION HEATER ANI) norman, CONSTRUCTION Application mea December27, 1926. serial No..157,192.

This invention relates to a combination heater and muffler.A

The chief objectlof this invention is to pro- -vide a muilier of suchconstruction that in addition to servin its normal purpose of muilingthe wexplosive sounds of an internal combustion engine, said muiier `isadapted to heat air passing 'thereovr and under confinement, said heatedair thereupon being suitable lfor vehicle compartment heating. l

Another object of the invention is to construct the combination heaterand muffler such that during such seasons of the year when heating isnot ldesired the heater will be self Ventilating. One` feature of thecombination heating muier consists .in the specific construction of thecombination heating muler, and another feature consists in the specificconstruction of the ventible air heating casing andv the third featureof the invention consists in the association of the two such that areturn bend passage is obtained.

Another' feature of the invention consists in the arrangement of thedevice such that it may be readily supported upon a motor4 vehicle andthe heating muier readily substi` tuted for the standard muler provided.The full nature of the invention will be understood. from theaccompanyingA drawings and the following description and claims:

In the drawings Fig. 1 is a side'elevational view of a portion of themotor vehiclev showing the internal combustion engine and -heatingsystem. Fig. 2 is an enlarged longitudinal sectional view throughtheheafng system, the exhaust lincluding the mulil r` being shown inelevation. Fig. 3 is a top plan view of the exhaust heating muffler witha portion combustion engine shownfin quarter section. Fig. 4 is a'trans--vl verse sectional view taken on lines 4-4 of Figs.2and3.v t Inthe drawings 10 indicates an Internal having an exhaust 11. The motorvehicle includes 'the dash 12, toeboard 13 and ioor board 14as well asthe step supporting bracket 15. All of the forel going is of the usualconstruction.

The details of the combination heating muler are shown in all of thefigures an able by the outlet 18 of the muffler and is rigidly securedthereto by suitable/means such as the set screwV or rivet 23.|

The muffler is constructed such that it is not only adapted `to serve asa muliler and thereby replace the standard muffler constructionprovided, but it serves as an air heater-as well. The body portion 16.includes the central chamber 24 which. extends from the inlet 17 to theOutlet 18, but direct passage therethrough is, prevented by the inwardlyextending bailes 25 terminating short of the middle lof the passage andoutwardly extending interposed baflies 26 extending towards thesidesfrom the center, all of said lbaffles being connected at the tops andbottoms tothe top and bottom portion of the casing. The casing upon 'itsupper and lower exterior surface is shown providedL with parallel ribsorv heat radiating surfaces 2,7 and upon its lateral faces is providedwith fiat liangesor surfaces 28, the same being laterally aperltured atthe ends as at 29y for heater casing anchorage. The heater casingconsists of U or channel-shaped sheet metal members 30 formation, seeFig. 4, by suitable means such as the screws 31 receivable bythethreaded Openings 29. The continuation ofthe flanges from 4end to endinsures a partition arrangement forming an upper and- -lower chamberchannel member has' an [angular extending portion 33 including an. arture 33a that receives the outlet 18.0f t e-muiller. The screwl bolts32 at this .end of the heater rigidly elarnp a U-sha ed strap closure 341n closed position, see igs. 1 and 2, to form a return ,bend passageIthroughthe heater casing. After loosening bolts ,32 and tilting the and31, the same having over-lapping par-f allel portions positionableadJacent the or passage in the heater casing.l Theupper U-shaped strapcounterclockwise until it lies parallel to the lower portion 30 it issecured `in abuttable relation theretopermitted by the elongated slot 35in the member 34 venting the 5 air passage.

. heater casing. It passessthrough the lower passage, .engages .thedelecting ventilator 'go valve 34 and the angular portion 33 and returnsalong the upper cliannel'formed between the upper heater casing member3land the top ofthe muffler. The upper member l31v -at 4its upper -endincludes a rectangula 25 outlet 40 extendinglaterally of the bodyportion. The open end of the upper end of the member 31 .isclosed by adefiecting Valve 41 pivotally supported at 42, and this valve when inthe position shown in Fig..2 serves as a closure for the channel andinsures discharge of the heated air through the outlet '40' and preventsits discharge. through the open upper .end of theheater. valve member 41is tilted clockwise, this substantiallyloses the outlet and opens theoperi end of the heater. The bolts 42 are adapted to clampingly secure,as well as pivotallesupp'ort-fo-said adjustment, the valve mem r 41.Thus,when the d electing valve 34 and the deiecting valve 41 arepositioned in open relation, to wit, thatoppositely from conditionsshown in'Fig. 2, free ventilation When the a hot air discharge adjacentthe air intake and in the other channel formed by the muffier within thecasing, and a valve means adjacent thereto for venting the passagebetween the first-mentioned valve and thedischarge and for controllingsaid discharge.

2. A combination heating mutller, comprising a mufling member for theexhaust of an engine, an air heating casing peripherally enveloping themuilling member, said easing at one end including an air intake and anair discharge, lateral walls projecting outwardl from the mulilingmember to the casing, said .Walls and member constituting a partitionfor forming a pair of channels in the casing, one channel communicatingwith the discharge and the adjacent end of the other channelcommunicating with the intake, the opposite ends of said channelscommunicating with each other, and a combination deiiecting valvepositioned adjacent the lastmentioned channel communication for ventingthe same.

In witness whereof, we have hereunto affixed our signatures. l

QUINTIN G. NOBLITT.

LEW A. REEVES. FRANK H. SPARKS.

will be obtained through lthe lieatercasing and no heated air will bedischarged through the outlet 40 and thus vventing the heater.

JWhen Vthe delecting valves are positioned as shown in Fig. 2 the heatedair is causedto 'pass over the muiiier surfaces, become heated andthereupon be discliar ed through areg` ister construction 43 suitalyfmounted in the los toe-board 13 aiidhave a telescopic connecitionwith the outlet 40. This telescopic connection permits of adjustmentfor each vindividual vehicle. A 'plurality of heat yradiatiiig tinsf27are` provided to insure the rapid transfer ofrheat {from the muier tothe air passing thereover, and not onlyserve to direct the flow of theair longitudinally of the muiiler and the heater casing, but also reventto "a considerable extent'local circu- Fation. in the heater.

The invention claimed is:

1. A combination hetingmuiiier comprising a muiing member for vtheexhaust of' an engine', a casing -peripherally envelopingl said

